1. inve the molecules of a substance move around the bonds usually hold tight. However, bonds can fracture when molecules collide, or crash into one another in just the right way When bonds holding molecules together separate a chemical reaction can emerge. 2. The speed at which a chemical reaction develops is called the reaction rate .Some reactions have naturally slow reaction rates Other reactions have naturally fast reaction rates However, the rate of most chemical reactions can be altered.One way to increase reaction rate is to increase the temperat re. Increasing the temperature causes molecules to collide with more force More bonds between atoms fracture This increases the reaction rate. An example of this would be baking cookie dough . Cookie dough baked at a higher temperature will cook more quickly. On the other hand lowering the temperature usually yields a slow down of the reaction.The molecules collide with less force, and more of the bonds between the atoms stay together.For instance, it would take longer for bread dough to bake at a lower temperature than it would at a higher temperature The reaction rate would not increase as quickly In paragraph 3,the word yields means __ Select one: produces. lowers. duplicates. increases.